1N5732B semiconductor manufactured by Sylvania, listed as 1N5732B (circa 1979).

1N5569A semiconductor manufactured by Sylvania, listed as 1N5569A (circa 1979).

1N5519 semiconductor manufactured by Sylvania, listed as 1N5519 (circa 1979).

1N5368B semiconductor manufactured by Sylvania, listed as 1N5368B (circa 1979).

1N5281A semiconductor manufactured by Sylvania, listed as 1N5281A (circa 1979).

1N5242B semiconductor manufactured by Sylvania, listed as 1N5242B (circa 1979).

1N5887B semiconductor manufactured by Sylvania, listed as 1N5887B (circa 1979).

1N5732 semiconductor manufactured by Sylvania, listed as 1N5732 (circa 1979).

1N5569 semiconductor manufactured by Sylvania, listed as 1N5569 (circa 1979).

1N5518B semiconductor manufactured by Sylvania, listed as 1N5518B (circa 1979).

1N5368A semiconductor manufactured by Sylvania, listed as 1N5368A (circa 1979).

1N5281 semiconductor manufactured by Sylvania, listed as 1N5281 (circa 1979).

1N5242A semiconductor manufactured by Sylvania, listed as 1N5242A (circa 1979).

1N5886B semiconductor manufactured by Sylvania, listed as 1N5886B (circa 1979).

1N5731B semiconductor manufactured by Sylvania, listed as 1N5731B (circa 1979).

1N5568B semiconductor manufactured by Sylvania, listed as 1N5568B (circa 1979).

1N5518A semiconductor manufactured by Sylvania, listed as 1N5518A (circa 1979).

1N5368 semiconductor manufactured by Sylvania, listed as 1N5368 (circa 1979).

1N5280B semiconductor manufactured by Sylvania, listed as 1N5280B (circa 1979).

1N5242 semiconductor manufactured by Sylvania, listed as 1N5242 (circa 1979).